ISX to X15 swap headache. PLEASE HELP

[Rawze]

The X15 turbos have a 3-wire RPM sensor if I am not mistaken, and the CM2350 turbo's have the older style 2-wire sensor.

If that turbo has the 2-wire sensor and the wiring harness plugs into it properly, then I would say leave it alone.. or replace the sensor with the same type, but do not try to upgrade/replace the turbo or sensor at this point.

And yeah, the engine uses that sensor to help protect the exhaust and turbo.. and I think you mentioned that it already has a crappy delete file in it, so it could be disabled as far as anyone knows.

-- Once you get it close as you can, you need to take a trip over here, as you are only an hour from me ... and we can straighten out the programming + set that ecm to run an X15 properly.